Talk about comfort food! This was IT when I was growing up. Our mother was more or less a plain cook. She grew up on a farm and didn't much go in for frills in her cooking. When she was learning to cook, speed and practicality were prized assets. There were eight family members to feed, not to mention the hired hands. So for the most part "fancy" got left behind. But her Plain Potato Soup was wonderful, and I still make it the same way to this day.
Photo by: blekko.com/ws/potato+soup+/images
Peel potatoes and cut into bite-size cubes. Peel and chop onion; place both in a large saucepan of boiling salted water. Reduce heat and simmer, covered, for about 15-20 minutes or until potatoes and onions are tender.
Drain potatoes and onions into a colander; set aside. In the saucepan, melt the butter and add the salt and pepper. Pour in milk and heat on medium-low setting until heated through; do not boil. Add the potatoes and onions back in and let simmer, uncovered, for 5 minutes on low heat.
I like to eat it with cheese and crackers on the side. Also goes great with a grilled cheese sandwich!